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Oklahoma Water Resources Center

Washita River Watershed

ESPCoR Area Map:

About the Area:

Situated mostly within Oklahoma’s Cross Timbers Transition ecoregion, Caddo County’s landscape encompasses a mosaic of rolling-to-level cropland, native prairie, and “improved” rangelands in its north, northwest, west-central, and southern sections.

The Washita River originates in the Texas panhandle, and enters west-central Oklahoma in Roger Mills County. From there it flows 575 miles in an east-southeasterly direction to its confluence with the Red River at Lake Texoma, in the south-central part of Oklahoma.

For more information about this region, visit our Washita River-Caddo County Region page and see our printer-friendly Washita River Watershed fact sheet.


More Resources:

Additional information about the Upper Washita River and Caddo County Region

Socio-ecological research efforts of OK EPSCoR researchers

Washita River Watershed Publications

Watershed Models

Data/Decision Tools

Washita River Watershed fact sheet (printer-friendly)



This material is based on work supported by the National Science Foundation under Grant No. OIA-1301789. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation or Oklahoma State Regents for Higher Education.

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